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首页> 外文期刊>Acta crystallographica. Section C, Structural chemistry. >A new two-dimensional extended adenine and thiophenecarboxylate mixed-ligand zinc(II) complex: synthesis, structure, thermostability and luminescent properties
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A new two-dimensional extended adenine and thiophenecarboxylate mixed-ligand zinc(II) complex: synthesis, structure, thermostability and luminescent properties

机译：新型二维扩展的腺嘌呤和噻吩羧酸盐混合配体锌（II）配合物：合成，结构，热稳定性和发光性能

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摘要

The design and preparation of crystalline polymeric materials has attracted increasing attention due to their diverse applications as functional materials in gas storage, separation, catalysis, sensing and photoluminescence. The judicious selection of organic linkers is critical for varying the coordination behaviour of the metal ions and determining the overall characteristics of the networks. A new adenine-based ZnII coordination polymer, [Zn(C6H2O4S)(C5H5N5)]n or [Zn(tdc)(9H-ade)] (H2tdc is thiophene-2,5-dicarboxylic acid and ade is adenine), has been prepared hydrothermally and the crystal structure exhibits in its packing two-dimensional (4,4) grid sheets parallel to the ab plane, featuring two distinct square cavities delimited by the two types of ligands and the ZnII ions with the dimensions 6.6 × 6.6 and 10.2 × 10.2?? (based on the Zn...Zn distance). The title complex shows enhanced photoluminescence at 378?nm compared to the free ligands, suggesting that the coordination of H2tdc or adenine to the metal centre effectively increases the rigidity of the ligands and reduces the energy loss by radiative decay of intraligand excited states.
机译：结晶聚合物材料的设计和制备由于其在气体存储，分离，催化，传感和光致发光中作为功能材料的各种应用而引起了越来越多的关注。明智地选择有机连接基对于改变金属离子的配位行为和确定网络的整体特性至关重要。一种新的基于腺嘌呤的ZnII配位聚合物[Zn（C6H2O4S）（C5H5N5）] n或[Zn（tdc）（9H-ade）]（H2tdc是噻吩-2,5-二羧酸和ade是腺嘌呤）水热法制备，其晶体结构在其填充物中呈现平行于ab平面的二维（4,4）网格片，具有两个明显的方腔，它们由两种类型的配体和​​尺寸为6.6×6.6和10.2的ZnII离子界定×10.2 ?? （基于Zn ... Zn距离）。与游离配体相比，标题复合物在378？nm处显示出增强的光致发光，这表明H2tdc或腺嘌呤与金属中心的配位有效地提高了配体的刚性，并减少了配体内激发态的辐射衰减引起的能量损失。

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